查询词典 systematic sampling

The system has realized signal generator, signal"s sampling and averaging function, signal"s power spectral density and cross special density analysis, the design and application of digital filter, signal analysis in time, frequency and inverted frequency domain.

实现了波形发生器的设计、信号采集及平均处理、滤波器的设计及应用、信号的时域、频域以及倒频域分析。

We propose a wave equation based migration scheme for imaging the steep dipping structures with 3D sparsely sampling dataset, especially sparsely sampled in the crossline direction.

针对稀疏采样，特别是crossline方向稀疏采样的三维地震数据，提出了一个基于波动方程方法的陡角度构造深度偏移成像方法。

Therefore, an explicit 3D differential migration algorithm based on a modified McClellan transform was proposed, which handles unequal sampling intervals in the inline and crossline directions and no resample is needed. The modified McClellan transformation matrix can directly image data from a square grid.

为此，提出了一种修正McClellan变换的三维显式差分偏移算法，即将插值嵌于外推算子中，无需对数据重采样，可以直接对矩形网格资料进行偏移成像。

Under the higher-dimensional situation, it introduces mainly the multiple integrals formulas on some standard areas, the multiple integrals formula by the methods of sampling, the reduction of dimensions and the boundary type cubature with a certain algebraic precision, and calculate multiple integrals with the methods of number theoretical net and so on.

在高维情形下，主要介绍了一些标准区域上的多重积分公式，用抽样法来求多重积分，具有代数精度的降维展开式和边界型求积公式，以及用数论网格的方法来计算高维积分等。

Grandis, the U.S. Animal and Plant Health Insection Service has increased sampling and cutting of cucurbit fruits from Panama upon arrival in the United States.

作为对巴拿马南美瓜实蝇发现的回应，美国农业部动植物检疫局从巴拿马增加了取样运到美国进行研究。

Age tell " China runs a newspaper " reporter, through the qualitative check personnel that grooms strictly, schedule quarter at acting plant directly at ordinary times, meaning undertaking supervisory to whole production technological process, have sampling observation to partial product; And the finished product of storehouse of carry back VANCL, undertake examining in the round by technical qualitative check staff even, after undertaking checking to the link such as the exterior of each product, cuff, button, thrum, eligible product just can leave factory.

陈年告诉《中国经营报》记者，经过严格培训的质检人员，平时就直接安排驻扎在代工厂，意在对整个生产流程进行监督，对部分产品进行抽检；而运回VANCL仓库的成品，还要由专门的质检人员进行全面的检验，对每一件产品的外观、袖口、扣子、线头等环节进行检查后，合格产品才可以出厂。

The structure of the design include a nucleus manipulator (AT89S52 ), the current, sampling, comparision amplification, A/D,D/A converter, keyboard display, and so on.

它以AT89S52作为核心控制器，包括电源、取样放大、A/D和D/A转换、键盘控制与显示等模块。

The structure of the design include a nucleus manipulator (AT89S52 ), the current , sampling, comparision amplification, A/D, D/A converter, keyboard display, and so on .

本设计是基于单片机的一种数控电源，与一般电源相比具有宽范围电流输出、可修改性所需电流键盘输入、两级步进调节、输出电流及设定电流显示、负载两端电压显示、纹波系数小等特点。

We propose a unified method to approximate important geometric attributes, including normal vector, gauss curvature, mean curvature, principal curvatures and principal directions on point sampled surface. Based on MLS projection our method is robust to noise and stable to the sampling density.

曲面的微分性质包括法向量和切平面、高斯曲率、平均曲率、主曲率和主方向，在计算机图形学、机器视觉和计算机辅助设计等领域发挥了重要的作用，比如曲面绘制、内外测试、曲面重建、曲面简化、去除曲面噪声和模型分割等。

Design features like built-in filter slots, combined with optional accessories such as direct-attach cuvette holders, make sampling simple.

像内置过滤槽的设计，与可选择附件如直接试管固定器的组合，使取样简单。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。